Cobalt Digital FUSION 3G 9921-FS 3G_HD_SD Frame Sync - Manual (Page 102)

3
9921-FS Function Submenu List and Descriptions
3-50 9921-FS PRODUCT MANUAL 9921-FS-OM (V1.15)
(continued)
• Metadata Embedding Embedded Metadata Output enables SMPTE 2020-1 metadata embedding
in the SDI video output, as selected using controls described above.
Embedded Output Line allows selection of SMPTE 2020-1 metadata line
location within the VANC space for re-inserted Dolby ® metadata.
(Range is 9 thru 41)
Note: • Although the output line drop-down will allow any choice within the 9
thru 41 range, the actual range is automatically clamped (limited to)
certain ranges to prevent inadvertent conflict with active picture area
depending on video format. See Ancillary Data Line Number
Locations and Ranges (p. 3-9) for more information.
• The card does not check for conflicts on a given line number. Make
certain the selected line is available and carrying no other data
unless existing metadata is to be intentionally overwritten.
Typically, when encoding is active it is recommended that any
metadata not specifically related to that being used by the encoder
be removed (or replaced with metadata being used by the encoder),
and also that the line number be set to overwrite obsolete input VBI
metadata. Also, the encoded pair carries the up to date metadata
within the encoded pair stream. Removing or replacing obsolete
metadata avoids any ambiguity of having different metadata packets
on multiple lines, or metadata that is not related to the encoding
being performed.
Table 3-2 9921-FS Function Submenu List — continued
In this example, the on-card Dolby encoder is to receive external metadata over serial port B. Also, the new metadata from the
on-card decoder is to be inserted into the SDI output SMPTE 2020 VBI and exported from the card over serial port A.
Metadata Routing Example
Decoder metadata is exported (outputed) from the card
on Serial Port 1
Decoder metadata is embedded on SDI output
SMPTE 2020 VBI
Encoder receives external metadata on Serial Port B
Dolby
Encoder
Serial Port 1
Serial Port 2
Dolby
Decoder
Tx – export new metadata
SMPTE 2020 embed
new metadata
Rx – import external metadata